diff --git a/src/main/java/com/loafle/overflow/member/model/Member.java b/src/main/java/com/loafle/overflow/member/model/Member.java
index b699978..daba06a 100644
--- a/src/main/java/com/loafle/overflow/member/model/Member.java
+++ b/src/main/java/com/loafle/overflow/member/model/Member.java
@@ -16,7 +16,7 @@ public class Member implements Serializable {
     @GeneratedValue(strategy= GenerationType.IDENTITY)
     private Long id;
 
-    @Column(name="EMAIL", nullable=false)
+    @Column(name="EMAIL", unique=true, nullable=false)
     private String email;
 
     @Column(name="PW_SALT", nullable=false)